CN206377027U - The single screw rod type refrigerating compressor that a kind of motor is independently cooled down - Google Patents
The single screw rod type refrigerating compressor that a kind of motor is independently cooled down Download PDFInfo
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- CN206377027U CN206377027U CN201720025899.1U CN201720025899U CN206377027U CN 206377027 U CN206377027 U CN 206377027U CN 201720025899 U CN201720025899 U CN 201720025899U CN 206377027 U CN206377027 U CN 206377027U
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Abstract
The single screw rod type refrigerating compressor that a kind of motor is independently cooled down, includes the motor side and compressed side of opposing seal；Motor stator is fixedly arranged in motor side body, and its outer wall is brought into close contact with inner walls；Correspondence stator outer wall offers one first refrigerant channel in motor side inner walls, and the first refrigerant channel flat spin is surrounded on the outer wall of stator；Rotor is sheathed on electric machine main shaft, and the inside of main shaft offers the second refrigerant channel along its length, and its entrance is located at rear-end of spindle, and it, which is exported, has multiple, and is opened up along the radial direction of main shaft and is communicated in main shaft side wall；The rear and front end of stator has each extended over Stator End Winding, and the Stator End Winding gap is arranged between the inwall of motor side body and main shaft；Two coolant injections mouthful are additionally provided with, the rear and front end that Stator End Winding is corresponded to respectively is set；Refrigerant collection middle outlet is offered on motor side body.The utility model realizes the independent cooling of motor part, and each part of motor can accomplish inside and outside comprehensive cooling.
Description
Technical field
The utility model is related to single screw rod type refrigerating compressor, and in particular to the single screw rod that a kind of motor part is independently cooled down
Refrigeration compressor.
Background technology
With the continuous renewal of single screw rod type refrigerating compressor technology, single-screw compressor air-conditioning, refrigeration, freeze with
And the field such as chemical industry is widely used.And different application fields has different to the range of operation of single screw compressor
It is required that.The range of operation of single-screw compressor how is expanded while hydraulic performance decline under reduction nominal condition to greatest extent
An importance as current single screw compressor technical research is applied to adapt to different units.
It is the cooling of motor to determine one of them important factor of single screw compressor range of operation, can be produced during motor operation
Raw loss, including stator core loss, stator winding loss, rotor core loss, rotor aluminum loss and mechanical loss, these damages
Consumption is all transformed into heat energy, raises the temperature of motor each several part.In motor it is heat-resisting it is worst be winding insulating materials, work as motor
When temperature is no more than the maximum permissible temperature of insulating materials used, lasting a long time for insulating materials is reachable 15~20 years；Conversely,
If temperature exceedes above-mentioned maximum temperature, insulating materials aging, become fragile, and shorten under electrical machinery life, serious conditions, insulation material
Material will be carbonized, go bad, losing insulating properties, so that burn-down of electric motor.There is data to suggest that：When temperature rise often rises 1 DEG C, the longevity of motor
Life will reduce 6 years.
Two principal elements of influence motor temperature rise are that motor is lost and extraneous cooling condition in itself, therefore to make motor
Temperature rise is no more than setting value, it is necessary to the temperature rise of motor is reduced in terms of two：One is electrical machinery plant to be made from designing and producing technique
Upper optimization motor body, makes the loss of electric machine be reduced to minimum；Two be to improve the cooling effect in the external world, limits the temperature rise of motor
Within the scope of certain temperature.Wherein, refrigerant is most commonly blown into motor by the way for improving extraneous cooling effect,
Take away the heat produced during motor work.
But the prior art has the following disadvantages：Traditional helical-lobe compressor, its motor be located at compressor suction side or
Exhaust side, the motor type of cooling is air-breathing cooling or is vented cooling, and the refrigerant gas of cooling motor is participation in refrigeration system
The main road refrigerant gas of circulation, therefore have that cooling effect of motor is poor, each position inhomogeneous cooling is even and temperature control is not smart
Really the problem of, and the cooling of rotor, stator and electric machine main shaft often floats on surface, and its inside can not be cooled down, therefore it is difficult
To meet the cooling needs of motor.
Therefore, how the deficiency that above-mentioned prior art is present, become as the problem to be researched and solved of the utility model.
The content of the invention
The purpose of this utility model is to provide the single screw rod type refrigerating compressor that a kind of motor is independently cooled down.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
In the single screw rod type refrigerating compressor that a kind of motor is independently cooled down, including a casing, the casing along its length
Level offers an assembling chamber, and the assembling chamber is including a horizontally disposed motor side and is connected with the motor side front end
One compressed side, and the motor side and compressed side opposing seal setting；Wherein, the motor side is used to assemble refrigerant compression
The motor of machine, the motor includes stator and rotor；The compressed side is used for the screw rotor and star for assembling refrigeration compressor
Wheel；
The stator is fixedly arranged in motor side body, and the shape and the shape of motor side housing cavity of stator match, and
The inwall of the outer wall of the stator and motor side body is brought into close contact；Wherein, institute is also corresponded on the inwall of the motor side body
The outer wall for stating stator offers one first refrigerant channel, first refrigerant channel in the horizontal direction spiral surrounding in the stator
Outer wall；Refrigerant import is further opened with the motor side body, the refrigerant import is connected with first refrigerant channel, and this first
A refrigerant exit is also provided with refrigerant channel；
The rotor is arranged the middle part for being positioned at electric machine main shaft, and the relatively described stator rotation of rotor is set；The main shaft
It is lying in the horizontal direction in the motor side body, the front end of main shaft and the rotating shaft connecting shaft of screw rotor in the compressed side are set
Put；The inside of the main shaft offers the second refrigerant channel along its length, and the entrance of second refrigerant channel is located at main shaft
Rear end, the outlet of the second refrigerant channel has multiple, and each outlet is opened up along the radial direction of main shaft, is communicated in the side of main shaft
Wall, and each outlet is respectively positioned on the front portion of the installation site of the rotor；The outlet of second refrigerant channel is in motor side
The inside of housing；
Wherein, the rear and front end of the stator has each extended over Stator End Winding, and the Stator End Winding gap is set
It is placed between the inwall of the motor side body and the main shaft；Two coolant injections mouthful are additionally provided with the motor side body, point
Not Dui Ying the rear and front end of Stator End Winding set, and simultaneously towards between the inwall of Stator End Winding and motor side body
And the space injection refrigerant between Stator End Winding and main shaft；
Refrigerant collection middle outlet is offered on the motor side body.
Relevant content in above-mentioned technical proposal is explained as follows：
1. in such scheme, by the setting of first refrigerant channel, cooling drop can be carried out to the outer surface of stator
Temperature.
2. in such scheme, " inwall of the outer wall of the stator and assembling chamber is brought into close contact " is designed whereby, can be with structure
It is closed space into the first refrigerant channel, is able to define the flow circuits of refrigerant.
3. in such scheme, after refrigerant enters the first refrigerant channel from refrigerant import, due to the first refrigerant channel spiral shell
Curl up on the stator, thus when refrigerant via the first refrigerant channel from refrigerant exit outflow during, refrigerant will be taken away fixed
The heat that son is operationally produced, and then reach the purpose of cooling stator.
4. in such scheme, second refrigerant channel is cooled down to the inside of main shaft, and then in rotor
Side is cooled down.
5. in such scheme, " outlet of the second refrigerant channel has multiple, and each outlet is opened up along the radial direction of main shaft,
It is communicated in the side wall of main shaft ", constitute when rotor rotates at a high speed, the refrigerant during the second refrigerant channel is respectively exported can be by centrifugal force
Effect throw away each outlet, and then cause the inside of the second refrigerant channel to produce negative pressure, obtain so that the second refrigerant channel
Entrance is automatic to suck refrigerant in the second refrigerant channel, and then saves the dynamic force-summing device for providing high pressure refrigerant, reduces
Equipment cost.
6. in such scheme, by the setting of two coolant injections mouthful, surface can be carried out to rotor and main shaft and cooled, together
When can be to be cooled down on the inside of Stator End Winding and stator.With reference to setting for the first refrigerant channel and the second refrigerant channel
Put, allow this case each part of motor in motor side is carried out it is inside and outside it is comprehensive cool, greatly improve cold
But effect.
7. in such scheme, by the setting of the refrigerant collection middle outlet, the first refrigerant channel, the second refrigerant channel and
The outflow refrigerant of coolant injection mouthful can enter in motor side body, and collect outflow via the refrigerant collection middle outlet.
8. in such scheme, the refrigerant exit is opened on the motor side body；The refrigerant import is connected with institute
The front end of the first refrigerant channel is stated, the refrigerant exit is connected with the rear end of first refrigerant channel.
9. in such scheme, first refrigerant channel is provided with two, and two the first refrigerant channels each correspond to a refrigerant
Import, the two refrigerant imports correspondence stator medium position is simultaneously opened on motor side body, two the first refrigerant channels it is cold
Matchmaker outlet is opened up towards the two ends of the stator, and connects the inside of the motor side body, constitutes the first refrigerant stream described in two
Road is symmetrical arranged on stator.Design whereby, the refrigerant in two first refrigerant channels is by respective refrigerant exit from stator
Both sides flow into the inside of motor side body, and are flowed out by the refrigerant collection middle outlet.Therefore the cooling of stator surface can be made
The upper grade of cooling-down effect.
10. in such scheme, each outlet of second refrigerant channel is uniformly distributed along the circumference of main shaft.Set whereby
Meter, can improve the effect that centrifugal force flow out to refrigerant so that the negative regulation that produces inside the second refrigerant channel and effective, enter
And ensure the reliability of rotor cooling.
Utility model works principle and advantage are as follows：
The single screw rod type refrigerating compressor that a kind of motor of the utility model is independently cooled down, including opposing seal motor side and
Compressed side；Motor stator is fixedly arranged in motor side body, and the shape of its shape and housing cavity matches, and its outer wall and housing
Inwall be brought into close contact；The outer wall of correspondence stator offers one first refrigerant channel on the inwall of motor side body, and this is first cold
Matchmaker's runner flat spin is surrounded on the outer wall of stator；Rotor is sheathed on electric machine main shaft, and the inside of main shaft is opened along its length
Provided with the second refrigerant channel, its entrance is located at rear-end of spindle, and it, which is exported, has multiple, and opens up and is communicated in along the radial direction of main shaft
Main shaft side wall；The rear and front end of stator has each extended over Stator End Winding, and the Stator End Winding gap is arranged at motor side
Between the inwall and main shaft of housing；Two coolant injections mouthful are additionally provided with, the rear and front end that Stator End Winding is corresponded to respectively is set；Motor
Refrigerant collection middle outlet is offered on side body.Compared to existing technologies, the utility model can realize the independence of motor part
Cooling, and the stator and rotor of motor further realize the independent cooling of difference so that stator, rotor include electric machine main shaft
Cooling it is more uniform, each part can accomplish inside and outside comprehensive cooling, not only good cooling results, and the control of chilling temperature
System is also more accurate.
Brief description of the drawings
Accompanying drawing 1 is the end face structure schematic diagram of the utility model embodiment；
Accompanying drawing 2 be in Fig. 1 R-R to cross section structure diagram；
Accompanying drawing 3 be in Fig. 1 P-P to cross section structure diagram；
Accompanying drawing 4 is the cross-sectional view of the utility model embodiment motor side；
Accompanying drawing 5 is the decomposing schematic representation of the utility model embodiment Stator and electrical machine side body；
Accompanying drawing 6 is the structural representation of the utility model embodiment electric machine main shaft；
Accompanying drawing 7 is Fig. 6 cross-sectional view；
Accompanying drawing 8 is the structural representation that the utility model embodiment rotor is incorporated into main shaft.
In the figures above：1. casing；2. motor side；3. compressed side；4. stator；5. rotor；6. screw rotor；7. star-wheel；
8. motor side body；9. the first refrigerant channel；10. refrigerant import；11. refrigerant exit；12. main shaft；13. the second refrigerant channel；
14. entrance；15. outlet；16. Stator End Winding；17. coolant injection mouthful；18. refrigerant collection middle outlet.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Embodiment：Referring to shown in accompanying drawing 1~8, the single screw rod type refrigerating compressor that a kind of motor is independently cooled down, including a machine
Level offers an assembling chamber along its length in shell 1, the casing 1, and the assembling chamber includes a horizontally disposed motor
Side 2 and a compressed side 3 in the front end of the motor side 2 is connected with, and the motor side 2 and the opposing seal of the compressed side 3 are set；
Wherein, the motor side 2 is used for the motor for assembling refrigeration compressor, and the motor includes stator 4 and rotor 5；The compressed side 3
Screw rotor 6 and star-wheel 7 for assembling refrigeration compressor.
The stator 4 is fixedly arranged in motor side body 8, the shape and the shape phase of the inner chamber of motor side body 8 of stator 4
Match somebody with somebody, and the inwall of the outer wall and motor side body 8 of the stator 4 is brought into close contact.Wherein, on the inwall of the motor side body 8
The outer wall for also corresponding to the stator 4 offers one first refrigerant channel 9, first refrigerant channel 9 spiral surrounding in the horizontal direction
In the outer wall of the stator 4, design whereby, may be constructed the first refrigerant channel 9 for closed space, be able to define the stream of refrigerant
Moving-wire road；Refrigerant import 10 is further opened with the motor side body 8, the refrigerant import 10 is connected with first refrigerant channel
9, a refrigerant exit 11 is also provided with first refrigerant channel 9；When refrigerant from refrigerant import 10 enter the first refrigerant channel 9 it
Afterwards, because the spiral winding of the first refrigerant channel 9 is on the stator 4, thus when refrigerant via the first refrigerant channel 9 from refrigerant exit 11
During outflow, refrigerant will take away the heat that stator 4 is operationally produced, and then reach the purpose of cooling stator 4.
The rotor 5 is arranged the middle part for being positioned at electric machine main shaft 12, and rotor 5 is rotated relative to the stator 4 and set；It is described
Main shaft 12 is lying in the motor side body 8 in the horizontal direction, the front end of main shaft 12 and screw rotor 6 in the compressed side 3
Rotating shaft connecting shaft set；The inside of the main shaft 12 offers the second refrigerant channel 13 along its length, the second refrigerant stream
The entrance 14 in road 13 is located at the rear end of main shaft 12, and the outlet 15 of the second refrigerant channel 13 has multiple, and each outlet 15 is along master
The radial direction of axle 12 is opened up, and is communicated in the side wall of main shaft 12, is constituted when rotor 5 rotates at a high speed, the second respectively outlet of refrigerant channel 13
Refrigerant in 15 can throw away each outlet 15 by the effect of centrifugal force, and then the inside of the second refrigerant channel 13 is produced
Negative pressure, is obtained so that the entrance of the second refrigerant channel 13 is automatic sucks refrigerant in the second refrigerant channel 13, and then is saved and be used for
The dynamic force-summing device of high pressure refrigerant is provided, equipment cost is reduced.Each outlet 15 of second refrigerant channel 13 is respectively positioned on described turn
The front portion of the installation site of son 5；The outlet 15 of second refrigerant channel 13 is communicated in the inside of motor side body 8；Described
Two refrigerant channels 13 are cooled down to the inside of main shaft 12, and then the inner side of rotor 5 is cooled down.
Wherein, the rear and front end of the stator 4 has been each extended between Stator End Winding 16, and the Stator End Winding 16
Gap is arranged between the inwall of the motor side body 8 and the main shaft 12；The spray of two refrigerants is additionally provided with the motor side body 8
Loophole 17, two coolant injection mouthful 17 corresponds to the Stator End Winding 16 of front end respectively and the Stator End Winding 16 of rear end is set
Put, and simultaneously towards between the inwall of Stator End Winding 16 and motor side body 8 and Stator End Winding 16 and main shaft 12
Between space injection refrigerant；By the setting of two coolant injections mouthful 17, surface can be carried out to rotor 5 and main shaft 12 and cooled,
Stator End Winding 16 and the inner side of stator 4 can be cooled down simultaneously.With reference to the first refrigerant channel 9 and the second refrigerant stream
The setting in road 13, allow this case each part of motor in motor side 2 is carried out it is inside and outside it is comprehensive cool, pole
Improve cooling effect greatly.
Refrigerant collection middle outlet 18, the first refrigerant channel 9 and the second refrigerant channel 13 are offered on the motor side body 8
Outflow refrigerant can be directly entered in motor side body 8, and collect outflow via the refrigerant collection middle outlet 18.
Wherein, first refrigerant channel 9 is provided with two, and two the first refrigerant channels 9 each correspond to a refrigerant imports 10,
The two refrigerant imports 10 correspondence medium position of stator 4 is simultaneously opened on motor side body 8, two the first refrigerant channels 9 it is cold
Matchmaker outlet 11 is opened up towards the two ends of the stator 4, and connects the inside of the motor side body 8, constitutes described in two first cold
Matchmaker's runner 9 is symmetrical arranged on stator 4.Design whereby, the refrigerant in two first refrigerant channels 9 passes through respective refrigerant exit 11
The inside of motor side body 8 is flowed into from the both sides of stator 4, and is flowed out by the refrigerant collection middle outlet 18.Therefore it is fixed to make
The upper grade of the effect that cools on sub 4 surfaces.
Wherein, each outlet 15 of second refrigerant channel 13 is uniformly distributed along the circumference of main shaft 12.Design whereby,
The effect that centrifugal force flows out to refrigerant can be improved so that negative regulation that the inside of the second refrigerant channel 13 is produced and effectively, entered
And ensure the reliability that rotor 5 is cooled down.
The single screw rod type refrigerating compressor that a kind of motor of the utility model is independently cooled down, including opposing seal motor side and
Compressed side；Motor stator is fixedly arranged in motor side body, and the shape of its shape and housing cavity matches, and its outer wall and housing
Inwall be brought into close contact；The outer wall of correspondence stator offers one first refrigerant channel on the inwall of motor side body, and this is first cold
Matchmaker's runner flat spin is surrounded on the outer wall of stator；Rotor is sheathed on electric machine main shaft, and the inside of main shaft is opened along its length
Provided with the second refrigerant channel, its entrance is located at rear-end of spindle, and it, which is exported, has multiple, and opens up and is communicated in along the radial direction of main shaft
Main shaft side wall；The rear and front end of stator has each extended over Stator End Winding, and the Stator End Winding gap is arranged at motor side
Between the inwall and main shaft of housing；Two coolant injections mouthful are additionally provided with, the rear and front end that Stator End Winding is corresponded to respectively is set；Motor
Refrigerant collection middle outlet is offered on side body.Compared to existing technologies, the utility model can realize the independence of motor part
Cooling, and the stator and rotor of motor further realize the independent cooling of difference so that stator, rotor include electric machine main shaft
Cooling it is more uniform, each part can accomplish inside and outside comprehensive cooling, not only good cooling results, and the control of chilling temperature
System is also more accurate.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover protection domain of the present utility model it
It is interior.
Claims (4)
1. the single screw rod type refrigerating compressor that a kind of motor is independently cooled down, it is characterised in that：
Including a casing, level offers an assembling chamber along its length in the casing, and the assembling chamber includes horizontal cloth
The motor side put and a compressed side in the motor side front end is connected with, and the motor side and the compressed side opposing seal
Set；Wherein, the motor side is used for the motor for assembling refrigeration compressor, and the motor includes stator and rotor；The compression
Side is used for the screw rotor and star-wheel for assembling refrigeration compressor；
The stator is fixedly arranged in motor side body, and the shape and the shape of motor side housing cavity of stator match, and described
The inwall of the outer wall of stator and motor side body is brought into close contact；Wherein, it is described fixed also to be corresponded on the inwall of the motor side body
The outer wall of son offers one first refrigerant channel, first refrigerant channel in the horizontal direction spiral surrounding in the outer of the stator
Wall；Refrigerant import is further opened with the motor side body, the refrigerant import is connected with first refrigerant channel, this is first cold
A refrigerant exit is also provided with matchmaker's runner；
The rotor is arranged the middle part for being positioned at electric machine main shaft, and the relatively described stator rotation of rotor is set；The main shaft is along water
Square to being lying in the motor side body, the front end of main shaft and the rotating shaft connecting shaft of screw rotor in the compressed side are set；
The inside of the main shaft offers the second refrigerant channel along its length, and the entrance of second refrigerant channel is located at after main shaft
End, the outlet of the second refrigerant channel has multiple, and each outlet is opened up along the radial direction of main shaft, is communicated in the side wall of main shaft, and
Each outlet is respectively positioned on the front portion of the installation site of the rotor；The outlet of second refrigerant channel is in motor side body
It is internal；
Wherein, the rear and front end of the stator has each extended over Stator End Winding, and the Stator End Winding gap is arranged at
Between the inwall and the main shaft of the motor side body；Two coolant injections mouthful are additionally provided with the motor side body, it is right respectively
Answer the rear and front end of Stator End Winding to set, and simultaneously towards between the inwall of Stator End Winding and motor side body and
Space injection refrigerant between Stator End Winding and main shaft；
Refrigerant collection middle outlet is offered on the motor side body.
2. refrigeration compressor according to claim 1, it is characterised in that：The refrigerant exit is opened in the motor side shell
On body；The refrigerant import is connected with the front end of first refrigerant channel, and the refrigerant exit is connected with first refrigerant
The rear end of runner.
3. refrigeration compressor according to claim 1, it is characterised in that：First refrigerant channel is provided with two, two
First refrigerant channel each corresponds to a refrigerant import, and the two refrigerant imports correspondence stator medium position is simultaneously opened in motor side shell
On body, the two ends of refrigerant exit towards the stator of two the first refrigerant channels are opened up, and connect the motor side body
Inside, the first refrigerant channel described in composition two is symmetrical arranged on stator.
4. refrigeration compressor according to claim 1, it is characterised in that：Each outlet edge of second refrigerant channel
The circumference of main shaft is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025899.1U CN206377027U (en) | 2017-01-10 | 2017-01-10 | The single screw rod type refrigerating compressor that a kind of motor is independently cooled down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025899.1U CN206377027U (en) | 2017-01-10 | 2017-01-10 | The single screw rod type refrigerating compressor that a kind of motor is independently cooled down |
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| Publication Number | Publication Date |
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| CN206377027U true CN206377027U (en) | 2017-08-04 |
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ID=59404665
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720025899.1U Active CN206377027U (en) | 2017-01-10 | 2017-01-10 | The single screw rod type refrigerating compressor that a kind of motor is independently cooled down |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762634A (en) * | 2017-01-10 | 2017-05-31 | 麦克维尔空调制冷(苏州)有限公司 | The single screw rod type refrigerating compressor that a kind of motor is independently cooled down |
-
2017
- 2017-01-10 CN CN201720025899.1U patent/CN206377027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762634A (en) * | 2017-01-10 | 2017-05-31 | 麦克维尔空调制冷(苏州)有限公司 | The single screw rod type refrigerating compressor that a kind of motor is independently cooled down |
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